Rotary engine.



B. W. FELLDWS.

l ROTARY ENGINE. (Application filed Jun 21, 1901. Renewed May 28, 1902.)

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'N0. 709,702 Patented Sept. 23, |902. B. W. FELLWS.

ROTARY ENGINE. (Application tiled June 21, 1901. Renewed May 2B, 1902.)

(No Model.)

3 Sheets-Sheet 2.

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No. 709,702. Patented sept. 23,1902. B. W.- FELLWS.

ROTARY ENGINE.

(Application filed June 21, 1901. Renewed May 28, 1902.)

Sheets-Sheet 3.

(N0 Model.)

FIEL?! l /T/VESSES UNITED S BYRON W. FELLOWS, OF BEVERLY, MASSACHUSETTS.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent N o. 709,702, dated September 23, 1902. Application led Tune 2l, 1901. Renewed May 28,1902. Serial No. 109,393. (No model.)

To @ZZ whom zit may concern:

Beit known that I, BYRON W. Fnnnows, a citizen of the United States, residing at Beverly,in the county ofEsseX-and State of Massachusetts, have invented certain new and useful Improvements in Rotary Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art `to which it appertains to make and use the same.

This invention relates to rotary engines; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure lis a front View of the engine; and Fig. 2 is a side view, certain parts being removed for'clearness. Fig. 3 is a section on line w as in Fig. 2, showing the gearing. Fig. 4 is a section on line y 9/ in Fig. 2, showing the eccentric and the parts cooperating with it.' Fig. 5 is an end view of one of the cylinders.

A is a main standard provided with a large circular bearing d'.

B is a sleeve which isjournaled in the bearing d and provided with a toothed ring b at its periphery outside one end ofthe bea-ring d. The bearing d is preferably provided with antifriction devices, such as balls, and it is of any approved construction.

O is the engine-shaft, which passes through the sleeve B and which is arranged eccentric ofthe center or axis ofthe said sleeve. The shaft O is journaled in a bracket c, secured to the main standard A, and in an out-end Y bearing c', which is supported in any approved manner.

1n the lower part of the bracket c a bearing LZ is formed, and D is a shaft which is journaled in the bearing d. A toothed pinion d' is secured on the shaft D and gears into the toothed ring b. A toothed wheel e is secured on the engine-shaft O and gears into a toothed pinion e, which is secured on the shaft D. The toothed ring b, the toothed wheel c, and the toothed pinions d and e' are proportioned so that when the sleeve B is revolved in the main bearing a the engine-shaft O is constrained to revolve at the same speed and in the same direction as the said sleeve.

F is a triple head which is secured on the engine-shaft C. y 'Three similar power-cylinders G are provided, and these cylinders are secured to the said head at equal distances apart and radially of the shaft C. These powercylinders are provided with valvechests g and piston-rods g.

H represents crossheads,which are secured to the piston-rods and provided with slides 7L, which project from the cross-heads alongside the cylinders and slide in guides h. The guides 71,' are secured to the cylindercovers e' and to lugs i", which project from the head F.

I represents the valve-spindles. The cyla inders are double acting, and the slidevalves are of approved construction, each cylinder being provided with two steam ports and an exhaust-port between them in the usual manner.

The engine-shaft C has a passage or holej formed centrally in it, and this hole is connected with the boiler in any approved manner and forms aportion of the steam-supply pipe. Three distributing-pipes j are provided and connect the hole or pipej with the steam-chests of the three cylinders. Each steamchest has an exhaust outlet-opening 7.a, which communicates with the atmosphere in any approved manner. If desired, the exhaust-openings 7c may be connected with a second axial passage or hole in the engine shaft by distributingpipes in a similar 1nanner to the connection of the steam-pipe, and the exhaust-steam can be let out of the rear end ot the engineshaft.

K represents three arms provided with a hub 7o', which is secured on the other end of the sleeve B from the toothed ring l).

M represents three connecting-rods, which are pivoted to the free end portions of the armsK by pins m and to the inner end portions of the slides h by pins on.

The steam is admitted to the cylinders and propels the piston-rods back and forth, so that the sleeve B is revolved by means of the arms K and connecting-rods M. Two cylinders are always in action, while the valve of the third is on its center, so that the sleeve and the engine-shaft revolve continuously as long as steam is supplied. If desired, the

cylinders can vloe arranged to Work the same as those of a triple-expansion engine, the steam being admitted to one cylinder after IOO the other by any approved arrangement of pipes and passages. The engine will also Work with compressed air instead of steam. The three slide-valve spindles are operated by a single eccentric N, which is mounted loosely on the engine-shaft C, adjacent to the out-end bearing c. An eccentric-strap n is provided, and n' represents eccentric-rods which operatively. connect the three valvespindles with the eccentric-strap.

O is a reversing-lever which is secured to the eccentric, and 0 is a catch which locks the lever O to a toothed quadrant o. The

direction of the revolution of the engine is determined by the position of the eccentric, and the engine is reversed by moving the lever O from one end of the quadrant to the other. end bearing c or to any other approved support. In order to constrain the eccentricstrap to revolve with the engine-shaft and to give it the freedom of motion necessary to permit the engine to be reversed, the eccentricstrap n is provided With a projecting loop p.

P is an arm which is pivoted at one end to abracket p on the head F between two of the cylinders. The other end portion of the arm P lengages with the loopp and prevents the eccentric from being revolved by frictional contact with the engine-shaft.

This engine does not require any fly-Wheel, and as itcan be started, reversed, and stopped instantaneously -by the lever O vit is well adapted to drive launches, automobiles, and many other machines to which an ordinary steam-engine with a fly-wheel cannot satisfactorily be applied.

What I claim is- 1. The combination, with ajmain bearing, andasleevejonrnaled in it and provided with projecting arms; of an engine-shaftjournaled eccentric of the said sleeve, power-cylinders mounted on the said shaft and operatively connected with the said arms whereby the said sleeve is revolved, and toothed wheels connecting the said shaft and sleeve and constraining them to revolve at the same speed and in the same direction, substantially as set forth.

2. The combination, with a main bearing, and a sleeve journaled in it and provided with projecting arms;` of power-cylinders secured to the said shaft and provided with pistonrods, guides arranged alongside the said cylinders, cross-heads secured to the piston-rods and provided with slides which work in the said'guides, and connecting-rods between the said slides and the projecting arms, substantially as set forth.

3. The combination, with a main bearing,

The quadrant is secured to the outand a sleeve journaled in it and provided with projecting arms; of an engine-shaftjournaled eccentric of the said sleeve and provided with an axial steam-passage, power-cylinders provided with steam-chests and mounted on the said shaft, steam-pipes connecting the said steam-chests With the said passage in the shaft, connections between the said cylinders and arms whereby the said sleeve is re- Volved, and toothed wheels connecting the said shaft and sleeve, substantially as set forth.

4. The combination, with a revoluble engine-shaft, of three power-cylinders secured to the said shaft and provided with valvespindles, an eccentric mounted on the said shaft and provided with a single eccentricstrap, means for preventing the said eccentric from revolving with the engine-shaft, a jointed driving device which connects the said eccentric-strap with the said shaft so that the strap is revolved by the shaft, and eccentricrods operatively connecting the said eccentric-strap with the valve-spindles, substantially as set forth.

5. The combination, with a revoluble engine-shaft, of three power-cylinders secured to the said shaft and provided with valvespindles, an eccentric mounted on the said shaft and provided with a single eccentricstrap, eccentric-rods operatively connecting the said eccentric-strap with the valve-spindles, a jointed driving device which connects the said eccentric-strap with the said shaft so that the eccentric maygbe moved to reverse the engine and so that the said eccentric-strap is revolved by the said shaft, a reversing-lever secured to the eccentric, a stationary quadrant, and a catch for connecting the said lever and quadrant, substantially as set forth.

6. The combination, with a revol-uble engine-shaft, of three power-cylinders secured to the said shaft and provided with valvespindles, an eccentric mounted on the said shaft, means for preventing the eccentric from revolving with the engine-shaft, an eccentricstrap provided with a projectingloop, an arm pivotally connected with the shaft and engaging with the said loop whereby the eccentric-strap is constrained to revolve with the shaft, and eccentric-rods operatively connecting the said eccentric-strap With the valvespindles, substantially as set forth.

In testimony whereof I affix my signature in presence of tWo Witnesses.

BYRON W. FELLOVS.

Witnesses:

ALICE J. MURRAY, FRED. K. DAGGETT.

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